皮皮学，免费搜题
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【单选题】
以下不属于东北三大怪的是（ ）A.
窗户纸糊窗外
B.
大姑娘叼烟袋
C.
板凳不坐蹲起来
D.
养活孩子吊起来
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皮皮学刷刷变学霸
举一反三
【单选题】Sixty percent of the work______ .
A.
have been done
B.
had been done
C.
has been done
D.
has done
【简答题】Does Lu Hua live on the old campus or the new campus?
【简答题】离心泵的叶轮有 ( ) 、 ( ) 和开敞式 三种形式。
【单选题】Over sixty percent of the church______destroyed during a bomb (炸弹) attack in the second World War.
A.
have been
B.
has been
C.
was
D.
were
【简答题】离心泵的叶轮有封闭式、半封闭式和（）三种形式。